SN74AHCT138QPWRQ1

Signal Switches, Multiplexers, Decoders Overview

The SN74AHCT138QPWRQ1 is an automotive-grade, 3-line to 8-line decoder/demultiplexer from Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 8.1 ns. The device supports surface-mount installation in a TSSOP-16 package and functions reliably across an extended temperature range from -40°C to +125°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive catalog qualification for reliable operation in vehicle environments
• High-speed decoding with 8.1 ns propagation delay
• Compatible with standard CMOS logic interfaces via AHCT series design

Signal Switches, Multiplexers, Decoders Applications

• Automotive electronic control unit address decoding
• Vehicle body control module signal routing
• Infotainment system data demultiplexing

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'PWRQ1' matches the required TSSOP-16 package and automotive grade specifications. Confirm that the 4.5 V to 5.5 V operating voltage aligns with your system's power rail. Ensure the -40°C to +125°C temperature rating meets your environmental requirements before finalizing procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a single 3-to-8 decoder is needed for automotive applications requiring high speed and wide temperature tolerance. It serves as a direct replacement for non-automotive SN74AHCT138 variants where AEC-Q100 reliability is mandatory. Consider pin compatibility if upgrading from legacy industrial logic families.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AHCTxQ family of Texas Instruments, designed specifically for automotive electronics. The 'Q' indicates automotive qualification, while 'HCT' denotes high-speed CMOS technology compatible with TTL inputs. This series ensures robust performance in harsh electromagnetic and thermal conditions typical of modern vehicles.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHCT138PW (Non-automotive version) offers identical electrical characteristics but lacks automotive qualification. SN74AHC138PWR provides similar functionality with a wider voltage range (2V to 5.5V) but different switching speeds.